Would Iceshard affect the terrorgiest's scream? if so I may take a couple of level 1 priests against vamps from now on.
The interwebz tells me it is a special attack that is made in the shooting phase. Per being a special attack, and not a shootin attack, you cannot Iceshard blizzard it - sadface engaged
but casting iceshards on it means it takes d6 s4 hits as its a flyer (lore attribute) is this right ? also drops its leadership so you slann can do it over with spirit leech
Yes as a flyer they are subject to the lore attribute hits, but it's toughness 6 with Regeneration 6+, the S4 hits won't matter. You need Uranon's Thunderbolt of Chain Lightning to make a real dent in them. Also they can heal a wound every time a caster with Lore of Vampires within 12 inches casts a spell. You have to do a lot of damage at once or they won't die.